A hummingbird can beat its wings at 50 beats per second, which is so fast that it looks like a buzzing blur in the air. Hummingbirds are also able to zoom up to a flower at 40 kilometres per hour (24 miles per hour) and stop in an instant.
Canine cops
Canine cops In Sweden, specially trained dogs are being used
to find mercury in places such as in areas which house old
industrial equipment, in laboratories and in drains. The dogs are
trained to sniff out mercury so that it can be safely disposed of.
This is part of a program initiated by the Swedish government to
clean up all old stocks of mercury. 27 NOVEMBER 1999, P. 23
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